Question

What is current sensitivity?

Answer 1

1. The deflection induced in the coil of the galvanometer per unit passage of electric current through it is known as current sensitivity.
   $Currentsensitivity=\frac{\theta }{I}=\frac{NBA}{K}$
   Where, $B$ represents the strength of the magnetic field in which the coil is suspended; $A$represents the area of the coil, $N$represents the number of turns in the coil,and $k$ represents restoring torque per unit twist of the suspension string.
2. A galvanometer is a tool for detecting and measuring low currents.
3. It's commonly used to display tiny deflections in variable resistor and bridge circuits.
4. It's a sensitive instrument for measuring currents.
5. It can detect very low currents of a few microamperes or less.